.ac is for Ascension Island
Registration web site:
Whois web interface:
Second Level Domains Registered
Third Level Domains Registered
ICANN records: http://www.iana.org/root-whois/ac.htm
Notes: WIPO standard arbitration policy (Not WIPO domain dispute policy) used. Residents of Ascension have exclusive access to CO.AC, .COM.AC, .ORG.AC, .NET.AC, .MIL.AC, .EDU.AC and .GOV.AC and must have at least one name server on the Island. International registrations are made in the Top Level of .AC and at least two name servers must be provided and they may be located anywhere in the world. No sex sites and no spamming from an .AC domain.
Domain Registration Rules: